Frequently asked questions
Why is the measurement performed using three cuffs and not four?
MESI ABPI MD utilizes a unique simultaneous measurement, where the cuffs are positioned on three limbs at the same time. A simultaneous measurement is essential for the accuracy of the ABI, as it eliminates measurement error due to the natural changes in human blood pressure. Simultaneous inflation and deflation of four cuffs instead of three would increase the risk for cardiac overload (it is not advisable to obstruct all four extremities at the same time).
Do the cuffs come in different sizes?
The basic MESI ABPI MD package includes a set of medium-sized cuffs for extremities with a circumference of 22-32 centimetres. An additional set of large-sized cuffs is also available for measurements on limbs with a circumference of 32-42 centimetres.
Is it possible with MESI ABPI MD to place a larger cuff only on one of the extremities and medium cuffs on the rest?
Yes, large and medium cuffs are interchangeable. A combination of cuffs with different circumferences can be used during the same measurement. Due to their conical shape, the appropriately-sized cuffs must be used at all times in order to ensure the perfect fit to the extremities and prevent any errors.
Is it important which cuff is placed on which extremity?
Each cuff is intended for placement on a specific limb. By placing the cuff on the wrong limb, the accuracy of the measurement results can be affected. The red cuff is intended for the upper arm, the yellow cuff for the lower left leg and the green cuff for the lower right leg.
Can cuffs be placed over the clothes?
Cuffs can be placed over one layer of thin clothing. Before attaching the cuffs, any tight-fitting clothes or tightly rolled up sleeves on the upper arm should be removed.
How can I be sure that cuffs have been placed correctly?
Each cuff is clearly labelled and includes a diagram to ensure correct placement. When fastening, make sure that cuffs are wrapped around the extremity as tight as possible, while ensuring the patient is comfortable. For exact placing instructions, refer to the “Instructions for use”.
Should the arm cuff be placed on the left or on the right arm?
It is advised to perform the measurement on the right arm, due to lower incidence of subclavian stenosis. When a difference in the arm blood pressures is suspected, it is recommended to place the arm cuff on the other arm and repeat the measurement. The result considered should be the lowest ABI of the two.
How sensitive are cuffs to movements?
During the measurement, the patient must lie completely still, must be relaxed and must not talk. They must not cross their legs. As the plethysmography sensors detect even the smallest changes in volume, cuffs are highly sensitive to movement during the measurement process.
How can cuffs be cleaned and protected?
We recommend cleaning the cuffs with a quick-drying disinfectant, either in wipe form on in spray form, to avoid excess liquid remaining on the cuffs for an extended period. As stated in the “Instructions for use”, they should not be soaked at any time.
In case of patients with lower extremity wounds, we recommend protecting them with a protective sleeve or a different impermeable dressing – this also protects cuffs against contamination.
How to place cuffs in case the patient has smaller ankles and larger calves?
Make sure you place cuffs so they follow the calf’s shape and form a conical figure as demonstrated.
Do not leave any space between the limb and the cuff in order to avoid measurement errors.